/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2015 Synergy Si Inc.
 * 
 * This package is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * found in the file LICENSE that should have accompanied this file.
 * 
 * This package is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "synergy/ClipboardChunk.h"

#include "synergy/protocol_types.h"

ClipboardChunk::ClipboardChunk(size_t size) :
	Chunk(size)
{
		m_dataSize = size - CLIPBOARD_CHUNK_META_SIZE;
}

ClipboardChunk*
ClipboardChunk::start(
					ClipboardID id,
					UInt32 sequence,
					const String& size)
{
	size_t sizeLength = size.size();
	ClipboardChunk* start = new ClipboardChunk(sizeLength + CLIPBOARD_CHUNK_META_SIZE);
	char* chunk = start->m_chunk;

	chunk[0] = id;
	UInt32* seq = reinterpret_cast<UInt32*>(&chunk[1]);
	*seq = sequence;
	chunk[5] = kDataStart;
	memcpy(&chunk[6], size.c_str(), sizeLength);
	chunk[sizeLength + CLIPBOARD_CHUNK_META_SIZE - 1] = '\0';

	return start;
}

ClipboardChunk*
ClipboardChunk::data(
					ClipboardID id,
					UInt32 sequence,
					const String& data)
{
	size_t dataSize = data.size();
	ClipboardChunk* chunk = new ClipboardChunk(dataSize + CLIPBOARD_CHUNK_META_SIZE);
	char* chunkData = chunk->m_chunk;

	chunkData[0] = id;
	UInt32* seq = reinterpret_cast<UInt32*>(&chunkData[1]);
	*seq = sequence;
	chunkData[5] = kDataChunk;
	memcpy(&chunkData[6], data.c_str(), dataSize);
	chunkData[dataSize + CLIPBOARD_CHUNK_META_SIZE - 1] = '\0';

	return chunk;
}

ClipboardChunk*
ClipboardChunk::end(ClipboardID id, UInt32 sequence)
{
	ClipboardChunk* end = new ClipboardChunk(CLIPBOARD_CHUNK_META_SIZE);
	char* chunk = end->m_chunk;
	
	chunk[0] = id;
	UInt32* seq = reinterpret_cast<UInt32*>(&chunk[1]);
	*seq = sequence;
	chunk[5] = kDataEnd;
	chunk[CLIPBOARD_CHUNK_META_SIZE - 1] = '\0';

	return end;
}